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Ilizi
Basic information Name: Ilizi
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 1991
Country: Algeria
Mass:help 185 g
Classification
  history:
Meteoritical Bulletin:  MB 91  (2007)  H4
Recommended:  H4    [explanation]

This is 1 of 6029 approved meteorites (plus 2 unapproved names) classified as H4.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 1 Sep 2006
Writeuphelp
Writeup from MB 91:

Ilizi                                                                  26°45N, 08°53E

Ilizi, Algeria

Find: 1991

Ordinary chondrite (H4)

History: U. Messerli of Hermringen, Switzerland, found this single stone in the Ilizi area of Algeria in 1991. The sample was submitted to NMBE for classification in 2003. The stone was found among many terrestrial rocks. The terrestrial rocks show evidence that early humans may have used them as tools. It is suspected that the meteorite, due to one surface being very flat and smooth, may also have been used a tool during the Neolithic.

Physical characteristics: Dark brown rounded stone without fusion crust, 5.5 × 5 × 4 cm in size, 185 g mass. One side displays a very flat and smooth surface (~4 × 4 cm). The interior shows chondrules up to 5 mm in diameter.

Petrography: (E. Gnos, UBE; B. Hofmann, NMBE) Average olivine (Fa18.6), average orthopyroxene (Fs17.5Wo1.25).
Classification:
Ordinary chondrite (H4); S2, W4.

Type specimen: A 21.5 g type specimen and 1 polished thin section are on deposit at NMBE. U. Messerli holds the main mass

Data from:
  MB91
  Table 1
  Line 1:
Date:1991
Latitude:26°45'N
Longitude:8°53'E
Mass (g):185
Pieces:1
Class:H4
Shock stage:S2
Weathering grade:W4
Fayalite (mol%):18.6
Ferrosilite (mol%):17.5
Classifier:E. Gnos, UBE; B. Hofmann, NMBE
Type spec mass (g):21.5
Type spec location:NMBE
Main mass:U. Messerli
Institutions
   and collections
NMBE: Natural History Museum Bern Bernastrasse 15 CH-3005 Bern Switzerland, Switzerland; Website (institutional address; updated 2 Mar 2012)
Messerli: No contact information provided. (private address)
UBE: University of Bern, University of Bern, Hochschulstrasse 4, CH-3012 Bern, Switzerland (institutional address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 91, MAPS 42, 413-466 (2007)
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Geography:

Algeria
Coordinates:
     Recommended::   (26° 45'N, 8° 53'E)

Statistics:
     This is 1 of 5 approved meteorites from Illizi, Algeria
     This is 1 of 1130 approved meteorites from Algeria (plus 27 unapproved names) (plus 4 impact craters)
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